Number of (n+2) X (2+2) 0..1 arrays with no 3 X 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 1 and no column sum 1.

A257441

Number of (n+2) X (2+2) 0..1 arrays with no 3 X 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 1 and no column sum 1.

Terms

    a(0) =36a(1) =38a(2) =41a(3) =51a(4) =68a(5) =95a(6) =134a(7) =191a(8) =275a(9) =398a(10) =578a(11) =842a(12) =1229a(13) =1796a(14) =2627a(15) =3845a(16) =5630a(17) =8246a(18) =12080a(19) =17699a(20) =25934a(21) =38003a(22) =55691a(23) =81614a(24) =119606a(25) =175286a(26) =256889a(27) =376484a(28) =551759a(29) =808637

External references